Feature/256 difference images
When a comparison to a reference image fails, now an additional difference magnitude image is written out to facilitate analysis.
Also removed bugs in the OpenGLImageBuffer class.
@ademiralp , @mbellgardt
When a comparison to a reference image fails, now an additional difference magnitude image is written out to facilitate analysis.
Also removed bugs in the OpenGLImageBuffer class.
@ademiralp , @mbellgardt